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* upstream: Add channel_force_close()djm@openbsd.org2023-01-061-2/+2
| | | | | | | | | | | | | | | This will forcibly close an open channel by simulating read/write errors, draining the IO buffers and calling the detach function. Previously the detach function was only ever called during channel garbage collection, but there was no way to signal the user of a channel (e.g. session.c) that its channel was being closed deliberately (vs. by the usual state-machine logic). So this adds an extra "force" argument to the channel cleanup callback to indicate this condition. ok markus dtucker OpenBSD-Commit-ID: 23052707a42bdc62fda2508636e624afd466324b
* upstream: Add server support for signalling sessions via the SSHdjm@openbsd.org2018-10-021-1/+2
| | | | | | | | | | | | channel/ session protocol. Signalling is only supported to sesssions that are not subsystems and were not started with a forced command. Long requested in bz#1424 Based on a patch from markus@ and reworked by dtucker@; ok markus@ dtucker@ OpenBSD-Commit-ID: 4bea826f575862eaac569c4bedd1056a268be1c3
* upstream commitdjm@openbsd.org2017-09-121-8/+8
| | | | | | | | | | | | | | | | | | | | | | refactor channels.c Move static state to a "struct ssh_channels" that is allocated at runtime and tracked as a member of struct ssh. Explicitly pass "struct ssh" to all channels functions. Replace use of the legacy packet APIs in channels.c. Rework sshd_config PermitOpen handling: previously the configuration parser would call directly into the channels layer. After the refactor this is not possible, as the channels structures are allocated at connection time and aren't available when the configuration is parsed. The server config parser now tracks PermitOpen itself and explicitly configures the channels code later. ok markus@ Upstream-ID: 11828f161656b965cc306576422613614bea2d8f
* upstream commitdjm@openbsd.org2017-08-231-3/+1
| | | | | | | | | | Move several subprocess-related functions from various locations to misc.c. Extend subprocess() to offer a little more control over stdio disposition. feedback & ok dtucker@ Upstream-ID: 3573dd7109d13ef9bd3bed93a3deb170fbfce049
* upstream commitmarkus@openbsd.org2016-08-141-2/+1
| | | | | | remove ssh1 server code; ok djm@ Upstream-ID: c24c0c32c49b91740d5a94ae914fb1898ea5f534
* upstream commitdjm@openbsd.org2016-03-081-1/+3
| | | | | | | | | | refactor canohost.c: move functions that cache results closer to the places that use them (authn and session code). After this, no state is cached in canohost.c feedback and ok markus@ Upstream-ID: 5f2e4df88d4803fc8ec59ec53629105e23ce625e
* - djm@cvs.openbsd.org 2013/10/14 21:20:52Damien Miller2013-10-151-1/+2
| | | | | | [session.c session.h] Add logging of session starts in a useful format; ok markus@ feedback and ok dtucker@
* - djm@cvs.openbsd.org 2008/05/08 12:21:16Damien Miller2008-05-191-1/+3
| | | | | | | | | | | | | | | | | [monitor.c monitor_wrap.c session.h servconf.c servconf.h session.c] [sshd_config sshd_config.5] Make the maximum number of sessions run-time controllable via a sshd_config MaxSessions knob. This is useful for disabling login/shell/subsystem access while leaving port-forwarding working (MaxSessions 0), disabling connection multiplexing (MaxSessions 1) or simply increasing the number of allows multiplexed sessions. Because some bozos are sure to configure MaxSessions in excess of the number of available file descriptors in sshd (which, at peak, might be as many as 9*MaxSessions), audit sshd to ensure that it doesn't leak fds on error paths, and make it fail gracefully on out-of-fd conditions - sending channel errors instead of than exiting with fatal(). bz#1090; MaxSessions config bits and manpage from junyer AT gmail.com ok markus@
* - deraadt@cvs.openbsd.org 2006/08/03 03:34:42Damien Miller2006-08-051-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [OVERVIEW atomicio.c atomicio.h auth-bsdauth.c auth-chall.c auth-krb5.c] [auth-options.c auth-options.h auth-passwd.c auth-rh-rsa.c auth-rhosts.c] [auth-rsa.c auth-skey.c auth.c auth.h auth1.c auth2-chall.c auth2-gss.c] [auth2-hostbased.c auth2-kbdint.c auth2-none.c auth2-passwd.c ] [auth2-pubkey.c auth2.c authfd.c authfd.h authfile.c bufaux.c bufbn.c] [buffer.c buffer.h canohost.c channels.c channels.h cipher-3des1.c] [cipher-bf1.c cipher-ctr.c cipher.c cleanup.c clientloop.c compat.c] [compress.c deattack.c dh.c dispatch.c dns.c dns.h fatal.c groupaccess.c] [groupaccess.h gss-genr.c gss-serv-krb5.c gss-serv.c hostfile.c kex.c] [kex.h kexdh.c kexdhc.c kexdhs.c kexgex.c kexgexc.c kexgexs.c key.c] [key.h log.c log.h mac.c match.c md-sha256.c misc.c misc.h moduli.c] [monitor.c monitor_fdpass.c monitor_mm.c monitor_mm.h monitor_wrap.c] [monitor_wrap.h msg.c nchan.c packet.c progressmeter.c readconf.c] [readconf.h readpass.c rsa.c scard.c scard.h scp.c servconf.c servconf.h] [serverloop.c session.c session.h sftp-client.c sftp-common.c] [sftp-common.h sftp-glob.c sftp-server.c sftp.c ssh-add.c ssh-agent.c] [ssh-dss.c ssh-gss.h ssh-keygen.c ssh-keyscan.c ssh-keysign.c ssh-rsa.c] [ssh.c ssh.h sshconnect.c sshconnect.h sshconnect1.c sshconnect2.c] [sshd.c sshlogin.c sshlogin.h sshpty.c sshpty.h sshtty.c ttymodes.c] [uidswap.c uidswap.h uuencode.c uuencode.h xmalloc.c xmalloc.h] [loginrec.c loginrec.h openbsd-compat/port-aix.c openbsd-compat/port-tun.h] almost entirely get rid of the culture of ".h files that include .h files" ok djm, sort of ok stevesk makes the pain stop in one easy step NB. portable commit contains everything *except* removing includes.h, as that will take a fair bit more work as we move headers that are required for portability workarounds to defines.h. (also, this step wasn't "easy")
* - stevesk@cvs.openbsd.org 2006/07/06 16:03:53Damien Miller2006-07-101-1/+5
| | | | | | | | | | | [auth-options.c auth-options.h auth-passwd.c auth-rh-rsa.c] [auth-rhosts.c auth-rsa.c auth.c auth.h auth2-hostbased.c] [auth2-pubkey.c auth2.c includes.h misc.c misc.h monitor.c] [monitor_wrap.c monitor_wrap.h scp.c serverloop.c session.c] [session.h sftp-common.c ssh-add.c ssh-keygen.c ssh-keysign.c] [ssh.c sshconnect.c sshconnect.h sshd.c sshpty.c sshpty.h uidswap.c] [uidswap.h] move #include <pwd.h> out of includes.h; ok markus@
* - djm@cvs.openbsd.org 2006/03/25 22:22:43Damien Miller2006-03-261-1/+1
| | | | | | | | | | | | | | [atomicio.h auth-options.h auth.h auth2-gss.c authfd.h authfile.h] [bufaux.h buffer.h canohost.h channels.h cipher.h clientloop.h] [compat.h compress.h crc32.c crc32.h deattack.h dh.h dispatch.h] [dns.c dns.h getput.h groupaccess.h gss-genr.c gss-serv-krb5.c] [gss-serv.c hostfile.h includes.h kex.h key.h log.h mac.h match.h] [misc.h monitor.h monitor_fdpass.h monitor_mm.h monitor_wrap.h msg.h] [myproposal.h packet.h pathnames.h progressmeter.h readconf.h rsa.h] [scard.h servconf.h serverloop.h session.h sftp-common.h sftp.h] [ssh-gss.h ssh.h ssh1.h ssh2.h sshconnect.h sshlogin.h sshpty.h] [ttymodes.h uidswap.h uuencode.h xmalloc.h] standardise spacing in $OpenBSD$ tags; requested by deraadt@
* - deraadt@cvs.openbsd.org 2006/03/20 18:26:55Damien Miller2006-03-261-2/+5
| | | | | [session.h] annoying spacing fixes getting in the way of real diffs
* - (djm) [auth-pam.c sftp.c] spaces vs. tabs at start of lineDamien Miller2005-07-171-1/+2
| | | | | | | | | | | - djm@cvs.openbsd.org 2005/07/17 06:49:04 [channels.c channels.h session.c session.h] Fix a number of X11 forwarding channel leaks: 1. Refuse multiple X11 forwarding requests on the same session 2. Clean up all listeners after a single_connection X11 forward, not just the one that made the single connection 3. Destroy X11 listeners when the session owning them goes away testing and ok dtucker@
* - djm@cvs.openbsd.org 2005/06/17 02:44:33Damien Miller2005-06-171-2/+2
| | | | | | | | | | | [auth-rsa.c auth.c auth1.c auth2-chall.c auth2-gss.c authfd.c authfile.c] [bufaux.c canohost.c channels.c cipher.c clientloop.c dns.c gss-serv.c] [kex.c kex.h key.c mac.c match.c misc.c packet.c packet.h scp.c] [servconf.c session.c session.h sftp-client.c sftp-server.c sftp.c] [ssh-keyscan.c ssh-rsa.c sshconnect.c sshconnect1.c sshconnect2.c sshd.c] make this -Wsign-compare clean; ok avsm@ markus@ NB. auth1.c changes not committed yet (conflicts with uncommitted sync) NB2. more work may be needed to make portable Wsign-compare clean
* - dtucker@cvs.openbsd.org 2004/07/17 05:31:41Darren Tucker2004-07-171-4/+1
| | | | | | | | [monitor.c monitor_wrap.c session.c session.h sshd.c sshlogin.c] Move "Last logged in at.." message generation to the monitor, right before recording the new login. Fixes missing lastlog message when /var/log/lastlog is not world-readable and incorrect datestamp when multiple sessions are used (bz #463); much assistance & ok markus@
* - djm@cvs.openbsd.org 2004/04/27 09:46:37Darren Tucker2004-05-021-1/+6
| | | | | | | [readconf.c readconf.h servconf.c servconf.h session.c session.h ssh.c ssh_config.5 sshd_config.5] bz #815: implement ability to pass specified environment variables from the client to the server; ok markus@
* - markus@cvs.openbsd.org 2003/09/23 20:17:11Darren Tucker2003-10-021-2/+3
| | | | | | | | | | | [Makefile.in auth1.c auth2.c auth.c auth.h auth-krb5.c canohost.c cleanup.c clientloop.c fatal.c gss-serv.c log.c log.h monitor.c monitor.h monitor_wrap.c monitor_wrap.h packet.c serverloop.c session.c session.h ssh-agent.c sshd.c] replace fatal_cleanup() and linked list of fatal callbacks with static cleanup_exit() function. re-refine cleanup_exit() where appropriate, allocate sshd's authctxt eary to allow simpler cleanup in sshd. tested by many, ok deraadt@
* - markus@cvs.openbsd.org 2003/08/22 10:56:09Darren Tucker2003-08-261-1/+4
| | | | | | | | | [auth2.c auth2-gss.c auth.h compat.c compat.h gss-genr.c gss-serv-krb5.c gss-serv.c monitor.c monitor.h monitor_wrap.c monitor_wrap.h readconf.c readconf.h servconf.c servconf.h session.c session.h ssh-gss.h ssh_config.5 sshconnect2.c sshd_config sshd_config.5] support GSS API user authentication; patches from Simon Wilkinson, stripped down and tested by Jakob and myself.
* - deraadt@cvs.openbsd.org 2002/06/30 21:59:45Ben Lindstrom2002-07-041-2/+2
| | | | | | | [auth-bsdauth.c auth-skey.c auth2-chall.c clientloop.c key.c monitor_wrap.c monitor_wrap.h scard.h session.h sftp-glob.c ssh.c sshconnect2.c sshd.c] minor KNF
* - deraadt@cvs.openbsd.org 2002/06/23 21:06:41Ben Lindstrom2002-06-231-4/+4
| | | | | | | [channels.c channels.h session.c session.h] display, screen, row, col, xpixel, ypixel are u_int; markus ok - (bal) Also fixed IPADDR_IN_DISPLAY case where display, screen, row, col, xpixel are u_int.
* - markus@cvs.openbsd.org 2002/03/29 18:59:32Ben Lindstrom2002-04-021-1/+4
| | | | | [session.c session.h] retrieve last login time before the pty is allocated, store per session
* - markus@cvs.openbsd.org 2002/03/19 10:35:39Ben Lindstrom2002-03-221-1/+2
| | | | | [auth-options.c auth.h session.c session.h sshd.c] clean up prototypes
* - provos@cvs.openbsd.org 2002/03/18 17:50:31Ben Lindstrom2002-03-221-2/+32
| | | | | | | | | | | [auth-bsdauth.c auth-options.c auth-rh-rsa.c auth-rsa.c auth-skey.c auth.h auth1.c auth2-chall.c auth2.c kex.c kex.h kexdh.c kexgex.c servconf.c session.h servconf.h serverloop.c session.c sshd.c] integrate privilege separated openssh; its turned off by default for now. work done by me and markus@ applied, but outside of ensure that smaller code bits migrated with their owners.. no work was tried to 'fix' it to work. =) Later project!
* Stupid djm commits experimental code to head instead of branchDamien Miller2002-03-131-28/+0
| | | | revert
* Import of Niels Provos' 20020312 ssh-complete.diffDamien Miller2002-03-131-0/+28
| | | | PAM, Cygwin and OSF SIA will not work for sure
* - markus@cvs.openbsd.org 2002/02/03 17:53:25Damien Miller2002-02-051-2/+2
| | | | | | | | | [auth1.c serverloop.c session.c session.h] don't use channel_input_channel_request and callback use new server_input_channel_req() instead: server_input_channel_req does generic request parsing on server side session_input_channel_req handles just session specific things now ok djm@
* - (djm) OpenBSD CVS SyncDamien Miller2001-10-121-2/+2
| | | | | | | | | | - markus@cvs.openbsd.org 2001/10/10 22:18:47 [channels.c channels.h clientloop.c nchan.c serverloop.c] [session.c session.h] try to keep channels open until an exit-status message is sent. don't kill the login shells if the shells stdin/out/err is closed. this should now work: ssh -2n localhost 'exec > /dev/null 2>&1; sleep 10; exit 5'; echo ?
* - markus@cvs.openbsd.org 2001/10/09 21:59:41Damien Miller2001-10-101-2/+2
| | | | | [channels.c channels.h serverloop.c session.c session.h] simplify session close: no more delayed session_close, no more blocking wait() calls.
* - markus@cvs.openbsd.org 2001/07/02 13:59:15Ben Lindstrom2001-07-041-1/+2
| | | | | | [serverloop.c session.c session.h] wait until !session_have_children(); bugreport from Lutz.Jaenicke@aet.TU-Cottbus.DE
* - markus@cvs.openbsd.org 2001/06/27 02:12:54Ben Lindstrom2001-07-041-2/+2
| | | | | [serverloop.c serverloop.h session.c session.h] quick hack to make ssh2 work again.
* - markus@cvs.openbsd.org 2001/06/26 17:27:25Ben Lindstrom2001-07-041-6/+6
| | | | | | | | | | | | | [authfd.h authfile.h auth.h auth-options.h bufaux.h buffer.h canohost.h channels.h cipher.h clientloop.h compat.h compress.h crc32.h deattack.h dh.h dispatch.h groupaccess.c groupaccess.h hostfile.h kex.h key.h log.c log.h mac.h misc.c misc.h mpaux.h packet.h radix.h readconf.h readpass.h rsa.h servconf.h serverloop.h session.h sftp-common.c sftp-common.h sftp-glob.h sftp-int.h sshconnect.h ssh-dss.h sshlogin.h sshpty.h ssh-rsa.h sshtty.h tildexpand.h uidswap.h uuencode.h xmalloc.h] remove comments from .h, since they are cut&paste from the .c files and out of sync
* - itojun@cvs.openbsd.org 2001/06/26 06:33:07Ben Lindstrom2001-07-041-6/+6
| | | | | | | | | [servconf.h serverloop.h session.h sftp-client.h sftp-common.h sftp-glob.h sftp-int.h sshconnect.h ssh-dss.h sshlogin.h sshpty.h ssh-rsa.h tildexpand.h uidswap.h uuencode.h xmalloc.h] prototype pedant. not very creative... - () -> (void) - no variable names
* - markus@cvs.openbsd.org 2001/06/25 08:25:41Ben Lindstrom2001-07-041-2/+2
| | | | | | | [channels.c channels.h cipher.c clientloop.c compat.c compat.h hostfile.c kex.c kex.h key.c key.h nchan.c packet.c serverloop.c session.c session.h sftp-server.c ssh-add.c ssh-agent.c uuencode.h] update copyright for 2001
* - markus@cvs.openbsd.org 2001/03/21 11:43:45Ben Lindstrom2001-03-221-5/+2
| | | | | [auth1.c auth2.c session.c session.h] merge common ssh v1/2 code
* - niklas@cvs.openbsd.org 2001/01/2001Ben Lindstrom2001-01-291-0/+2
| | | | | | | | | | [atomicio.h canohost.h clientloop.h deattack.h dh.h dispatch.h groupaccess.c groupaccess.h hmac.h hostfile.h includes.h kex.h key.h log.h login.h match.h misc.h myproposal.h nchan.ms pathnames.h radix.h readpass.h rijndael.h serverloop.h session.h sftp.h ssh-add.1 ssh-dss.h ssh-keygen.1 ssh-keyscan.1 ssh-rsa.h ssh1.h ssh_config sshconnect.h sshd_config tildexpand.h uidswap.h uuencode.h] $OpenBSD$
* Please grep through the source and look for 'ISSUE' comments and verifyBen Lindstrom2001-01-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | that I was able to get all the portable bits in the right location. As for the SKEY comment there is an email out to Markus as to how it should be resolved. Until then I just #ifdef SKEY/#endif out the whole block. - (bal) OpenBSD Resync - markus@cvs.openbsd.org 2001/01/18 16:20:21 [log-client.c log-server.c log.c readconf.c servconf.c ssh.1 ssh.h sshd.8 sshd.c] log() is at pri=LOG_INFO, since LOG_NOTICE goes to /dev/console on many systems - markus@cvs.openbsd.org 2001/01/18 16:59:59 [auth-passwd.c auth.c auth.h auth1.c auth2.c serverloop.c session.c session.h sshconnect1.c] 1) removes fake skey from sshd, since this will be much harder with /usr/libexec/auth/login_XXX 2) share/unify code used in ssh-1 and ssh-2 authentication (server side) 3) make addition of BSD_AUTH and other challenge reponse methods easier. - markus@cvs.openbsd.org 2001/01/18 17:12:43 [auth-chall.c auth2-chall.c] rename *-skey.c *-chall.c since the files are not skey specific
* - (djm) Revert SSH2 serverloop hack, will find a better way.Damien Miller2000-10-141-1/+0
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* - (djm) Fix SSH2 not terminating until all background tasks done problem.Damien Miller2000-09-291-0/+1
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* - (djm) Merge OpenBSD changes:Damien Miller2000-09-161-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - markus@cvs.openbsd.org 2000/09/05 02:59:57 [session.c] print hostname (not hushlogin) - markus@cvs.openbsd.org 2000/09/05 13:18:48 [authfile.c ssh-add.c] enable ssh-add -d for DSA keys - markus@cvs.openbsd.org 2000/09/05 13:20:49 [sftp-server.c] cleanup - markus@cvs.openbsd.org 2000/09/06 03:46:41 [authfile.h] prototype - deraadt@cvs.openbsd.org 2000/09/07 14:27:56 [ALL] cleanup copyright notices on all files. I have attempted to be accurate with the details. everything is now under Tatu's licence (which I copied from his readme), and/or the core-sdi bsd-ish thing for deattack, or various openbsd developers under a 2-term bsd licence. We're not changing any rules, just being accurate. - markus@cvs.openbsd.org 2000/09/07 14:40:30 [channels.c channels.h clientloop.c serverloop.c ssh.c] cleanup window and packet sizes for ssh2 flow control; ok niels - markus@cvs.openbsd.org 2000/09/07 14:53:00 [scp.c] typo - markus@cvs.openbsd.org 2000/09/07 15:13:37 [auth-options.c auth-options.h auth-rh-rsa.c auth-rsa.c auth.c] [authfile.h canohost.c channels.h compat.c hostfile.h log.c match.h] [pty.c readconf.c] some more Copyright fixes - markus@cvs.openbsd.org 2000/09/08 03:02:51 [README.openssh2] bye bye - deraadt@cvs.openbsd.org 2000/09/11 18:38:33 [LICENCE cipher.c] a few more comments about it being ARC4 not RC4 - markus@cvs.openbsd.org 2000/09/12 14:53:11 [log-client.c log-server.c log.c ssh.1 ssh.c ssh.h sshd.8 sshd.c] multiple debug levels - markus@cvs.openbsd.org 2000/09/14 14:25:15 [clientloop.c] typo - deraadt@cvs.openbsd.org 2000/09/15 01:13:51 [ssh-agent.c] check return value for setenv(3) for failure, and deal appropriately
* - More large OpenBSD CVS updates:Damien Miller2000-04-121-0/+7
| | | | | | | | | | - [auth.c auth.h servconf.c servconf.h serverloop.c session.c] [session.h ssh.h sshd.c README.openssh2] ssh2 server side, see README.openssh2; enable with 'sshd -2' - [channels.c] no adjust after close - [sshd.c compat.c ] interop w/ latest ssh.com windows client.
* - Big OpenBSD CVS update (mainly beginnings of SSH2 infrastructure)Damien Miller2000-04-011-0/+7
- [auth.c session.c sshd.c auth.h] split sshd.c -> auth.c session.c sshd.c plus cleanup and goto-removal - [bufaux.c bufaux.h] support ssh2 bignums - [channels.c channels.h clientloop.c sshd.c nchan.c nchan.h packet.c] [readconf.c ssh.c ssh.h serverloop.c] replace big switch() with function tables (prepare for ssh2) - [ssh2.h] ssh2 message type codes - [sshd.8] reorder Xr to avoid cutting - [serverloop.c] close(fdin) if fdin != fdout, shutdown otherwise, ok theo@ - [channels.c] missing close allow bigger packets - [cipher.c cipher.h] support ssh2 ciphers - [compress.c] cleanup, less code - [dispatch.c dispatch.h] function tables for different message types - [log-server.c] do not log() if debuggin to stderr rename a cpp symbol, to avoid param.h collision - [mpaux.c] KNF - [nchan.c] sync w/ channels.c
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